Internal-combustion engine and the like.



E. A. RUNDLUF. y INTERNAL COMBUSTION ENGINE AND THE LIKE. APPLICATIONFILED SEPT. II. I9I4. 1,173,745. I Patented Feb.29,1916.

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E. A. RUNDLO F. INTERNAL COMBUSTION ENGINE AND THE LIKE APPLICATIONFILED SEPLII, 1914. 1 5323345, Patented Feb. 2!), 1916.

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UNITED STATES PATENT @FFIQE.

ERIK ANTON RUN D1153, 0F STOCKSUND, SVJ'EDEN.

INTERNAL-COMBUSTION ENGINE AND THE LIKE.

Application filed September 11, 1914.

To all whom it may concern Be it known that I, ERIK ANTON Rom)- niir, asubject of the King of Sweden, residing at Stocksund, in the Kingdom ofSweden, have invented new and useful Improvements in Internal-CombustionEngines and the like, of which the following is a specification,reference being had to the drawing accolnpanyingand forming part hereof.

\Vhen injecting fuel into internal-combustion engines especially intoengines with comparatively low compression it is of importance to soregulate the injection that the fuel hits a more or less heated part ofthe combustion chamber or working chamber, according to the variation ofthe load. WVhen starting and also when working at no load or at a smallload the fuel should hit a part heated as strongly as possib e in orderthat the gasification and ignition should take place sufliciently quickbut when increasing the load of the motor the fuel should hit apart lessheated according to the load in order to prevent pro-ignition. It has,therefore. been-necessary to cbntrol the injection of fuel in saidmanner and the nozzel for injection of fuel has, therefore, been mademovable, for instance by swinging, so that the jet of fuel by directingthe nozzle could be directed onto a certain spot. In the practice,however, such an arrangement is not practical for many reasons,particularly in that' it is hardly possible to make a perfect packingbetween the inorahlc nozzle and the wall of the combustion chamber. If acontrolling device for said purpose is to be practical the inlet of fuelmust remain fixed as compared with the wall of the combustion chamber.

Such an arrangement is the object of the present invention, which isbroadly characterized by this that one or more inlets for fuel'on themotor are so situated or constructed as compared with the inlet orinlets of air, gas or steam, or vice versa, that the fuel when injectedalone, that is to say when not meeting with air, gas or steam, enters acertain zone of the combustion chamber or working chamber, for instancea strongly heated zone, but when the injection is accompanied by thesimultaneous injection of air, gas or steam, the jet'or jets of fuelwill strike another, differently Specification of Letters Patent.

Patented Feb. 29, w th.

Serial 110. 861,189.

that is to. say if the inlet 2 for air is shut oil", the fuel is ejectedto the sides as shown in the drawing indicated by 4, and the jet of fuelwill then strike the upper or more heated part of the ignition chamberwhich if necessary is heated by a lamp when starting. The device isoperated in this way when starting and also when not loaded or at asmall load on the motor. At increased loads. however, the air, gas orsteam is turned on through the inlet 2 by opening the valve 5. The air,etc., carries with it the fuel so that the air and fuel are projectedagainst the lower inside of the ignition chamber or working chamber oragainst the. piston or against both of them as shown by 6 in Fig. 1,these parts being less heated or if necessary coo-led in any suitablemanner.

The arral'lgement can also be made as indicated by Fig. 2 showing theinlets for air other in such a. manner that, if the fuel only isinjected, it will strike the upper or the outer strongly heated part ofthe chamher but if both air and fuel are injected the air deflects thefuel to the lower or inner less heated part of the chamber. Theciticiencyof the air for carrying with it the fuel in said manner is notonly dependent on the reciprocal location of the inlets for air and fuelbut also on the condition of the inlets. The inlets fon air and fuel canalso be so arranged that the air injects the fuel and, if necessary,there may be arranged several inlets of air so located that they whenused in turn carry the fuel to certain parts of the ignition chamber.

I do not wish to be understood as limiting myself strictly to theprecise details of construction hereinbefore described and shown in theaccompanying drawing, as it is and fuel arranged at angles with one an--obvious that these details may beyaried without departing from theprinclple of my invention.

combination with a, combustion chamber having differently heated zones,of an inlet for fuel, and an inlet for air, gas or steam,

said inlets being arranged and located in 4 the combustion chamber insuch relation to 4 each other, that when fuel alone is injected into theengine it strikes one Zone of the combustion chamber, but when fuel and1 air, gas or. steam are injected simultaneously the fuel will strike;another 'diiferently, heated zone of the combustion chamber,substantially asand for the purpose set forth.

ERIK ANTONRUNDLGF.

.Witnesses:

FREDR. NORDSJD, NIORD GUSTAFSON.

